> I have seen the same issue on a windows 2000 machine running windows
> 2000 server, with the exception that the server could talk to itself
> but clients could not.
> In this case I was able to get the client talking using a netbeui
> connection. I may have to try the same on the Windows 2003 server.

Have you checked that the Internet Connection Firewall is off for all TCP
network connections under LANname->Properties->Advanced